/*
 *  Copyright 2010 SPeCS Research Group.
 * 
 *  Licensed under the Apache License, Version 2.0 (the "License");
 *  you may not use this file except in compliance with the License.
 *  You may obtain a copy of the License at
 * 
 *       http://www.apache.org/licenses/LICENSE-2.0
 * 
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License.
 *  under the License.
 */

package org.specs.DymaLib.TraceUnit.Builders;

import java.util.ArrayList;
import java.util.List;
import org.specs.DymaLib.TraceUnit.TraceUnit;
import org.specs.DymaLib.TraceUnit.UnitBuilder;

/**
 * Returns UnitTrace objects with only one instruction.
 *
 * @author Joao Bispo
 */
public class InstructionBuilder implements UnitBuilder {

   public InstructionBuilder() {
      traceUnits = new ArrayList<TraceUnit>();
   }



   public void nextInstruction(int address, String instruction) {
      // Build a TraceUnit out of every instruction
      List<String> instructions = new ArrayList<String>(1);
      instructions.add(instruction);
      List<Integer> addresses = new ArrayList<Integer>(1);
      addresses.add(address);

      traceUnits.add(new TraceUnit(instructions, addresses, address));
   }

   public void close() {
      // Nothing to do
   }

   public List<TraceUnit> getAndClearUnits() {
      List<TraceUnit> returnUnits = traceUnits;
      traceUnits = new ArrayList<TraceUnit>();
      return returnUnits;
   }

   private List<TraceUnit> traceUnits;
}
